Markus Heiden created SOLR-7803:
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Summary: Classloading deadlock in TrieField
Key: SOLR-7803
URL: https://issues.apache.org/jira/browse/SOLR-7803
Project: Solr
Issue Type: Bug
Affects Versions: 5.2.1
Environment: OSX
Reporter: Markus Heiden
Priority: Critical
When starting a Solr our instance lock up sometimes. We took a thread dump and
all thread are trying to load classes via Class.forName() and are stuck in that
method. One of these the threads got one step further into the <clinit> of
TrieField where it creates an internal static instance of TrieDateField
(circular dependency). I don't know why this locks up exactly, but this code
smells anyway. So I removed that instance and made the used methods static.
This does not completely remove the circular dependency, but at least it is no
more in <clinit>. For the future someone may extract a util class to remove the
circular dependency.
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